<?php $a = 5; // Integer $b = 5.34; // Float $c = "hello"; // String $d = true; // Boolean $e = NULL; // NULL $a = (unset) $a; $b = (unset) $b; $c = (unset) $c; $d = (unset) $d; $e = (unset) $e; //To verify the type of any object in PHP, use the var_dump() function: var_dump($a); var_dump($b); var_dump($c); var_dump($d); var_dump($e); ?>
NULL NULL NULL NULL NULL